As Cangaceiras Eróticas (HDTVRip) (1974)

Five slim white girls in their 20s, all with long hair and natural builds, set up a tent in a forest clearing. One brunette in a red hat spends time posing with a large horse, stroking its mane, then unbuttons her shirt while standing near it. Later, the group gathers around a metal cage holding the same horse, pushing it across a field with a truck in the background. They take turns fucking each other and jerking off around the cage and tent, mostly in doggy style and oral positions. The camera stays wide for most scenes, keeping everything in natural light with no close-ups of penetration, but you see full body movement and interaction. The whole thing has a rustic, voyeuristic feel — like watching a secret outdoor party where sex just happens.